如何将String型转换成float型?

[kingstonAAA]

Float( txtF1.getText() )
已对String数据进行判断, 确定其为float.

[a10002]

float a = Float.parseFloat(txtf1.gettext());

[sylmoon]

float a = Float.parseFloat(txtf1.gettext());

[sboom]

float f=(float)Double.parseDouble(txtf1.gettext());

[kenli]

Float.parseFloat

[awaysrain]

public class Test {
public static void main(String[] args) {
String str = "1.2";
float f = Float.parseFloat(str);
float ff = f + 1.0f;
System.out.println(f);
System.out.println(ff);
}
}
=============
1.2
2.2

[tom2005]

Float.parseFloat(sr)

[classjava]

try
{Float.parseFloat(String s);
}
catch(Exception e)
{}

[fog628]

同意classjava(原始野人)

[masse]

float a = Float.parseFloat("3.1415");

[show90]

float a = Float.parseFloat("3.1415");

[faysky2]

请问：如何把字符串123转换成数字型123？

[whbxm2000]

Integer.parseInt("123");